#!/usr/bin/make -f

# target platform: dm500plus, dm600pvr, dm7020, dm7025, dm800, dm8000
MACHINE = dm7020

# for a list of some other repositories have
# a look at http://git.opendreambox.org/
GIT_URL = git://git.opendreambox.org/git/openembedded

# in case you want to send pull requests or generate patches
#GIT_AUTHOR_NAME ?= Your Name
#GIT_AUTHOR_EMAIL ?= you@example.com

# you should not need to change anything below
BB_VERSION = 1.8.12
SVN = svn
SVN_BITBAKE_PARENT = "svn://svn.berlios.de/bitbake/"

GIT = git
GIT_BRANCH = opendreambox

PWD := $(shell pwd)

OE_BASE = $(PWD)/$(MACHINE)

all: initialize
	@echo 
	@echo "Openembedded for the Dreambox environment has been initialized"
	@echo "properly. Now you can either:"
	@echo
	@echo "  - make the 'image'-target to build an image, or"
	@echo "  - go into $(MACHINE)/build/, source env.source and start on your own!"
	@echo 

bb:
	$(SVN) checkout $(SVN_BITBAKE_PARENT)/tags/bitbake-$(BB_VERSION) bb



.PHONY: image initialize openembedded-update openembedded-update-all

image: initialize openembedded-update
	cd $(OE_BASE)/build; . ./env.source; bitbake dreambox-image

initialize: $(OE_BASE)/cache sources $(OE_BASE)/build $(OE_BASE)/build/conf \
	$(OE_BASE)/build/tmp $(OE_BASE)/openembedded $(OE_BASE)/build/conf/local.conf \
	$(OE_BASE)/build/env.source bb

openembedded-update: $(OE_BASE)/openembedded
	cd $(OE_BASE)/openembedded && $(GIT) pull

openembedded-update-all:
	@for dir in dm*/openembedded; do \
		echo "running ${GIT} pull in $$dir"; \
		cd $$dir && ${GIT} pull && cd -; \
	done


$(OE_BASE)/build $(OE_BASE)/build/conf $(OE_BASE)/build/tmp $(OE_BASE)/cache sources:
	mkdir -p $@

$(OE_BASE)/build/conf/local.conf:
	echo 'DL_DIR = "$(PWD)/sources"' > $@
	echo 'OE_BASE = "$(OE_BASE)"' >> $@
	echo 'BBFILES = "$${OE_BASE}/openembedded/packages/*/*.bb"' >> $@
	echo 'PREFERRED_PROVIDERS += " virtual/$${TARGET_PREFIX}gcc-initial:gcc-cross-initial"' >> $@
	echo 'PREFERRED_PROVIDERS += " virtual/$${TARGET_PREFIX}gcc:gcc-cross"' >> $@
	echo 'PREFERRED_PROVIDERS += " virtual/$${TARGET_PREFIX}g++:gcc-cross"' >> $@
	echo 'MACHINE = "$(MACHINE)"' >> $@
	echo 'TARGET_OS = "linux"' >> $@
	echo 'DISTRO = "opendreambox"' >> $@
	echo 'CACHE = "$(OE_BASE)/cache/oe-cache.$${USER}"' >> $@

$(OE_BASE)/build/env.source:
	echo 'OE_BASE=$(OE_BASE)' > $@
	echo 'export BBPATH="$${OE_BASE}/openembedded/:$(PWD)/bb/:$${OE_BASE}/build/"' >> $@
	echo 'PATH=$${PATH}:$(PWD)/bb/bin:$${OE_BASE}/build/tmp/cross/bin' >> $@
	echo 'export PATH' >> $@
	echo 'export LD_LIBRARY_PATH=' >> $@
	echo 'export LANG=C' >> $@
	cat $@

$(OE_BASE)/openembedded: $(OE_BASE)/openembedded/.git

$(OE_BASE)/openembedded/.git:
	$(GIT) clone -n $(GIT_URL) $(OE_BASE)/openembedded
	cd $(OE_BASE)/openembedded && ( \
		if [ -n "$(GIT_AUTHOR_EMAIL)" ]; then git config user.email "$(GIT_AUTHOR_EMAIL)"; fi; \
		if [ -n "$(GIT_AUTHOR_NAME)" ]; then git config user.name "$(GIT_AUTHOR_NAME)"; fi; \
		$(GIT) branch $(GIT_BRANCH) origin/$(GIT_BRANCH) || true; \
		$(GIT) checkout $(GIT_BRANCH) \
	)